[PATCH 1/3] io_uring: add IORING_OP_URING_CMD128 to opcode checks

[Caleb Sander Mateos]

io_should_commit(), io_uring_classic_poll(), and io_do_iopoll() compare
struct io_kiocb's opcode against IORING_OP_URING_CMD to implement
special treatment for uring_cmds. The recently added opcode
IORING_OP_URING_CMD128 is meant to be equivalent to IORING_OP_URING_CMD,
so treat it the same way in these functions.

Fixes: 1cba30bf9fdd ("io_uring: add support for IORING_SETUP_SQE_MIXED")
Signed-off-by: Caleb Sander Mateos <csander at purestorage.com>
---
 io_uring/io_uring.h | 6 ++++++
 io_uring/kbuf.c     | 2 +-
 io_uring/rw.c       | 4 ++--
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h
index 503663d6fd6d..0fa844faf287 100644
--- a/io_uring/io_uring.h
+++ b/io_uring/io_uring.h
@@ -528,10 +528,16 @@ static inline bool io_file_can_poll(struct io_kiocb *req)
 		return true;
 	}
 	return false;
 }
 
+static inline bool io_is_uring_cmd(const struct io_kiocb *req)
+{
+	return req->opcode == IORING_OP_URING_CMD ||
+	       req->opcode == IORING_OP_URING_CMD128;
+}
+
 static inline ktime_t io_get_time(struct io_ring_ctx *ctx)
 {
 	if (ctx->clockid == CLOCK_MONOTONIC)
 		return ktime_get();
 
diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c
index 67d4fe576473..dae5b4ab3819 100644
--- a/io_uring/kbuf.c
+++ b/io_uring/kbuf.c
@@ -169,11 +169,11 @@ static bool io_should_commit(struct io_kiocb *req, unsigned int issue_flags)
 	*/
 	if (issue_flags & IO_URING_F_UNLOCKED)
 		return true;
 
 	/* uring_cmd commits kbuf upfront, no need to auto-commit */
-	if (!io_file_can_poll(req) && req->opcode != IORING_OP_URING_CMD)
+	if (!io_file_can_poll(req) && !io_is_uring_cmd(req))
 		return true;
 	return false;
 }
 
 static struct io_br_sel io_ring_buffer_select(struct io_kiocb *req, size_t *len,
diff --git a/io_uring/rw.c b/io_uring/rw.c
index b3971171c342..1a5f262734e8 100644
--- a/io_uring/rw.c
+++ b/io_uring/rw.c
@@ -1252,11 +1252,11 @@ void io_rw_fail(struct io_kiocb *req)
 static int io_uring_classic_poll(struct io_kiocb *req, struct io_comp_batch *iob,
 				unsigned int poll_flags)
 {
 	struct file *file = req->file;
 
-	if (req->opcode == IORING_OP_URING_CMD) {
+	if (io_is_uring_cmd(req)) {
 		struct io_uring_cmd *ioucmd;
 
 		ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd);
 		return file->f_op->uring_cmd_iopoll(ioucmd, iob, poll_flags);
 	} else {
@@ -1378,11 +1378,11 @@ int io_do_iopoll(struct io_ring_ctx *ctx, bool force_nonspin)
 			continue;
 		list_del(&req->iopoll_node);
 		wq_list_add_tail(&req->comp_list, &ctx->submit_state.compl_reqs);
 		nr_events++;
 		req->cqe.flags = io_put_kbuf(req, req->cqe.res, NULL);
-		if (req->opcode != IORING_OP_URING_CMD)
+		if (!io_is_uring_cmd(req))
 			io_req_rw_cleanup(req, 0);
 	}
 	if (nr_events)
 		__io_submit_flush_completions(ctx);
 	return nr_events;
-- 
2.45.2